rsync man page questions

[Wolfram Volpi]

I am trying to read the rsync man page.  What do the acronyms "CW", “lq+rq”, and “lq-rq” mean?

The "Usage" section uses “CWrsync”.

The “Filter Rules” section says:
If a pattern does not begin with lq- rq (dash, space) or lq+ rq (plus, space), then the rule will be interpreted as if lq+ rq (for an include option) or lq- rq (for an exclude option) were prefixed to the string.

Thank you,
Wolf.